EP2624977A1 - Driver for a steel strip coiling installation - Google Patents

Abstract

A driver (1) for a steel strip coiling installation comprising at least one supporting drive roller (3), which is mounted on a frame (2), and at least one drive roller (4), which can be adjusted with respect to the supporting drive roller (3) and is mounted on at least one rocking arm (5a, 5b) connected to the frame (2), wherein the drive roller (4) is attached to a bearing region (7) of the rocking arm (5a, 5b). The driver (1) is characterized in that the bearing region (7) is open for introducing and removing the drive roller (4) to the side and/or upwards when placing the rocking arm (5a, 5b) in the operating position. For fixing the drive roller (4) on the bearing region (7), the driver (1) has a fixing mechanism. The method for removing a drive roller (4) from such a driver (1) comprises the steps of opening the fixing mechanism and removing the drive roller (4) from the driver (1) to the side and/or upwards.

Description

description

Description of the Invention Driver for a steel band coiler

Field of engineering

The present invention relates to a driver for a steel strip coiler having at least one support drive roller mounted on a frame, and at least one drive roller engageable with the support drive roller, which is mounted on at least one frame connected to the rocker, wherein the drive roller is mounted on a bearing portion of the rocker, and a method for removing a drive roller from such a driver.

PRIOR ART In driving devices, also called drivers, metal strip is clamped, driven or deflected between a pair of rollers. Drivers are typically used in rolling mills where they roll before reels

be arranged to the tape tension in front of the reel by means of two rollers, namely the drive roller and the

Support drive roller to adjust.

 Steering drivers have the additional task of lateral

To reduce migrations of the rolled strip before rewinding. For this purpose, for example, the pivotable drive roller is driven and against the stationary support drive roller

employed that by the position of the drive roller relative to the Stützreibrolle the rolled strip undergoes a desired strip tension and a desired lateral displacement. Such steering drivers are known, for example, from EP747147B1 or AT500689B1.

 EP747147B1EP shows a steering driver whose

pivotable drive roller between two wings by means of is arranged stored stored both ends of the driving roller axle. Both wings are rigidly connected to a torsion spring of a frame, which forms an axis of rotation for the wings.

In AT500689B1 a similar steering actuator is disclosed in which the rockers, however, can be pivoted independently of one another on an axis of rotation of a frame.

The drive roller and the support drive roller of a steering actuator must be regularly cleaned and polished, as

for example, by carbon caking, on the

aufhaspelnden tape existing dirt particles, or caused by the onset of surface defects in the

rewinding tape the surface of the drive roller and the support roller are uneven, which in turn can lead to damage to the surface of the reeled tape.

In EP747147B1 or AT500689B1, the traction roller axle is mounted on a bearing area of the rockers, wherein the

Drive roller is located below the rocker. The bearings of the drive roller to avoid damage during the tapping, for example, by spring-activated

Balancing set free of play.

A removal of the drive roller upwards is not possible, since such removal the rocker is in the way and blocks the way up. For a removal down, right or left in the operating state, the way through

Support drive roller and the frame locked. Before a removal is possible, therefore, only an obstructed path must be opened.

To facilitate cleaning and polishing of the capstan and prop stretcher, this will normally be the capstan

stored swinging couple pivoted by means of swing cylinders in an intermediate position; that is also for

Replacing the drive roller necessary. The intermediate position is often reached after pivoting of the pair of rockers by 180 °. The following are the drive roller and the

Support drive roller when installed usually by hand

cleaned and polished or polished. By cleaning and grinding or polishing in the system there is a security risk. This is because the people involved have to go inside the plant between the plant parts, which must be reliably turned off and blocked. There is also one

Security risk due to the time constraints to carry out these activities, as cleaning and grinding

or polishing in the time required for the work roll change of scaffolding period of 10 to 15 minutes must be performed. If, by cleaning,

Sanding and polishing are not sufficiently uniform

 Surface on the drive roller or support drive roller can produce, or in case of damage, the drive roller or the support drive roller must be removed after pivoting the wings out of the frame and replaced with a new drive roller or Stützreibreibrolle. For this purpose, the entire swing construction including the drive roller must be removed in the case of the steering drivers in accordance with EP747147B1 or AT500689B1. Due to the variety of to be solved

Connecting elements and the mass of the frame including the drive roller causes the maintenance of driving rollers and Stützreibrollen a considerable amount of time. In addition, the drive roller is poorly accessible for maintenance when it is located between the wings. Together assung of the invention

Technical task

The object of the present invention is to overcome these disadvantages of the prior art. This is a driver and a method for replacing a

Propulsion role in the driver proposed which less time consuming work with less security risks Changing the drive rollers causes conventional drivers and procedures.

Technical solution

This task is solved by a

 Driver for a steel strip coiler having at least one support drive roller mounted on a frame, and at least one drive roller engageable with the support drive roller mounted on at least one rocker connected to the frame, the drive roller being mounted on a bearing area of the rocker, characterized in that Storage area is open for insertion or removal of the drive roller to the side and / or upwards in position of the rocker in the operating position, and

the driver has a fixing mechanism for fixing the drive roller to the storage area.

Under the storage area is to be understood the area of the rocker, in which the drive roller is attached to the rocker.

Advantageous Effects of the Invention The storage area is for insertion

 Removal of the drive roller to the side and / or upwards in position of the rocker in the operating position open, therefore, the storage area is not an expansion of the drive roller to the side and / or up in the way. A drive roller can therefore be removed if necessary to the side and / or up from the rocker without the rocker with the

Remove the drive roller substantially from the operating position or swingarm with the drive roller completely

dismantled must. Operating position is a position of the rocker to be taken, which is taken in normal operation of the driver. The driver according to the invention instructs the driver

Fixation mechanism for fixing the drive roller on

Storage area on. This ensures during operation that the drive roller does not undesirably break off to the side and / or upwards. In the fixed state, a controlled displacement of the drive roller in different operating positions is possible.

 Preferably, the positioning of the drive roller for

Stützreibrolle in the fixed state by changing the

Setting the fixation mechanism in different

Positions changeable.

According to one embodiment of the present invention, the fixing mechanism comprises a displaceable latch, which is preferably fixable to the rocker arm.

According to another embodiment of the present invention, the fixing mechanism comprises a folding device whose parts can be folded around at least one axis attached to the rocker and which can be fixed to the rocker.

For example, it may be two interlockable arms that are locked by a movable wedge. Each of the arms works on a different axis.

The support drive roller is located below the drive roller. A removal of the support friction roller up is therefore not possible as long as the drive roller is installed in the driver. When the drive roller is removed, is for the

Support drive roller the way open for a removal.

If the drive roller between a pair of swing

is mounted, the distance of the rocker is preferably greater than the length of the support drive roller. This ensures that the support drive roller can be removed by the resulting due to removal of the drive roller free space upwards. If the distance of the rockers in the operating position is less than the length of the Stützreibrolle, it is preferred that at least one of the rockers is displaceable or pivotable relative to the other rocker, when the drive roller is removed. In this way it is achieved that the

Support drive roller can be removed.

Preferably, the steel strip coiler is a

Steel strip coiler for hot strip.

Preferably, the driver is a steering driver.

According to a preferred embodiment of the present invention

Invention are drive roller and Stützreibrolle in one

Holding device arranged.

The holding device, which may be a holding frame, for example, thus contains both the drive roller and the

Support drive roller.

This makes it possible, for removing or for inserting a pair of driving roller and supporting drive roller only to engage the holding device and to have to remove it from the driver. Because the drive roller and the support drive roller need not be removed individually or inserted individually into the driver, removal and insertion can be accomplished more quickly. The Stützreibrolle can stationary or displaceable on

Be stored frame.

According to one embodiment, the drive roller axle and / or the support drive roller axle about which the drive roller or the support drive roller rotates consists of at least two drive roller axle parts and / or

 Supporting friction roller parts, wherein at least one of

Treibrollenachsteile than the cylindrical body of the Drive roller or support drive roller detachably fastened - for example, via a connecting flange, a

Perforated disc with sliding driving pin, or

Claw coupling - shaft stub is executed. Of the

Stub shaft can be designed as a hollow shaft, in which to drive the drive roller or the

Stützreibrolle a motor-driven shaft is inserted. This allows for a quick removal of the drive roller and / or Stützreibrolle from the driver, which reduces a caused by time pressure during capstan change security risk.

According to one embodiment of the driver according to the invention, the support drive roller can be removed laterally in the direction of its longitudinal axis from the driver. It can also be inserted laterally in the direction of its longitudinal axis into the driver.

In the drivers shown in EP747147B1 or AT500689B1, one end of the rockers is pivotable about an axis of rotation, while the other end of the rockers is pivoted with one

Actuating device such as a

 Pressure medium cylinder, preferably a hydraulic cylinder, is connected. By adjusting this actuator, the rockers can be pivoted about its axis of rotation, for example, to enable the removal of the drive roller or to control or regulation of the distance of the drive roller and Stützreibrolle.

 The storage area of the drive roller is located between the pivotable end and the end of the rocker connected to the actuating device.

Also in the driver according to the invention, the rockers are pivotable about an axis of rotation arranged in a pivot axis of the pivot axis, and they are in one

Operating area with an actuating device

connected. In this case, the storage area of the drive roller as in EP747147B1 or AT500689B1 between the

Rotary axis range and the operating range are located. According to another embodiment, the axis of rotation between the bearing area and the

Actuation are located. An advantage of such

Out of leadership form is that when pressing the

Drive roller forces flow better into the swingarm and for the swingarm cheaper stress conditions are generated. The effective distance of an actuating device acting on one end of the rocker can be controlled in such a way

Design also structurally easier to enlarge than in as executed in EP747147B1 or AT500689B1 imple mentation forms. By increasing the effective distance equal forces can be achieved with smaller actuators, or achieve greater forces with the same actuators.

Another object of the present application is a method for removing a drive roller from a

Driver according to the invention.

 This method is characterized in that it includes the steps

 - opening the fixing mechanism,

 Removing the drive roller to the side and / or upwards from the driver,

includes.

By opening the fixing mechanism is meant that the fixation of the drive roller is solved at the storage area.

The support drive roller in a driver is going through

Fixing devices held in the driver to drive in

Normal operation to not change their position at all or to change their position beyond an acceptable level. The support drive roller can be fixed, so that no movement is possible. It may also be displaceable to an acceptable or desired extent. What extent of displacement acceptable

or desired, depends on the respective

Operating state. Depends on the deflection forces of the driver For example, the distance between the axes of the driving roller and the supporting drive roller can be varied to a certain extent. An embodiment of the method according to the invention is characterized in that, after removal of the

Drive roller in addition the steps

 - Release fixation devices for fixing the

Support drive roller in the driver,

- Removing the Stützreibrolle up the driver, includes.

By resulting from the removal of the drive roller opening and the support drive roller upwards out of the

Driver are taken.

According to another embodiment, the support drive roller can be removed laterally, ie in the direction of its

Longitudinal axis, are pulled out of the driver. This can be done before or after removing the drive roller according to the invention. This can also during the invention

Remove the drive roller from the driver; In this way, removal of the drive roller and the support drive roller can be carried out faster than if the two withdrawals take place successively.

 Then, the method according to the invention additionally comprises the steps during the removal of the drive roller

 - Release fixation devices for fixing the

Support drive roller in the driver,

- Remove the support drive roller by pulling it sideways out of the driver.

According to a preferred embodiment of the present invention

Invention, the drive roller and support drive roller are removed in pairs by removing a holding device, in which a pair of drive roller and Stützreibreibrolle is arranged, from the driver. Brief description of the drawings

The invention will be described by way of example in the attached schematic figures.

Figure la shows a side view of an imple mentation form of a driver according to the invention.

 FIG. 1b shows a driver according to FIG

elevated oblique view.

Figure 2 shows a view of a driver according to Figure lb from an elevated perspective view with in one

Holding device arranged drive roller and Stützreibrolle. FIG. 3 shows an embodiment of a driver according to the invention, in which the axis of rotation of the axis 11 is located between the bearing area 7 and the actuating area 12.

 FIG. 4 shows a driver according to the invention with removed support drive roller from an elevated oblique view.

Figure 5 shows an alternative for the fixing mechanism for fixing the drive roller on the storage area.

FIG. 6 shows a further embodiment of an embodiment

Driver according to the invention, in which the

Rotary axis region 11 between the storage area 7 and the actuating portion 12 is located. Description of the execution forms

FIG. 1 a shows a side view of a driver 1 according to the invention for a steel strip coiler, in particular a steering driver for a hot strip coiler. The driver 1 comprises a supported on a frame 2 Stützreibrolle 3, and a

In the figure 1, the drive roller 4 and the support drive roller 3 are shown only by dashed lines, since they are in the side view of the frame 2 and other parts of the

Driver are hidden. The capstan 4 is supported on a pair of wings 5a, 5b connected to the frame. In the side view of Figure 1, only one rocker 5a can be seen, the second rocker 5b of the pair is in this View hidden by rocker 5a. The pair of rockers 5a, 5b is in the operating position. The couple of

Swing 5a, 5b is about a rotation axis 6 of the frame. 2

pivotable. The drive roller 4 is attached to a storage area 7 of the rockers. The storage area 7 is open for insertion or removal of the drive roller 4 to the side upwards with the wings in position

Operating position. The storage area is shown with a corrugated closed line. A fixing mechanism for fixing the drive roller 4 at the storage area 7 is present, it is designed as a sliding latch 8. In the

shown position of the bolt 8, this is not yet in its final position in which he fixed the drive roller 4 at the storage area 7, moved. For clarity, a part of the rocker 5 is shown cut, so that the course of the bolt 8 in the rocker 5 is partially shown. When the latch 8 is moved from the position shown to its end position, as shown in the following figure lb, on the one hand the drive roller 4 is fixed, and on the other hand, the Ausbalancierungstöpfe 20a, 20b for play-free position of the bearings of the drive roller 4 is activated.

FIG. 1b shows a driver 1 according to FIG. 1a from an elevated oblique view. Parts identical to FIG. 1a are given the same reference numbers. In contrast to Figure la, the bolt 8 of the fixing mechanism in his

End position shown in which he fixed the drive roller on the bearing portion 7 of the wings 5a, 5b. Drive roller 4 and support drive roller 3 can be seen better than in Figure la. The second rocker 5b of the pair of rockers 5a, 5b can be seen in contrast to FIG.

In both FIG. 1 a and FIG. 1 b, one end of the rockers 5 a, 5 b is respectively connected to an actuating device, specifically a hydraulic cylinder 9 a, 9 b. By

Adjustment of these hydraulic cylinders 9a, 9b, the

Swinging 5a, 5b about its axis of rotation 6, for example, to adjust the distance from the drive roller 4 to the support drive roller 3.

 The storage area 7 of the drive roller is located between the pivotable about the axis of rotation 6 and the end with the

Hydraulic cylinders 9a, 9b of the actuator

connected end of the wings 5a, 5b.

FIG. 2 shows a further view of a driver according to FIG. 1b from an elevated oblique view. Parts that are identical to FIG. 1 b are given the same reference numbers. in the

Difference to Figure lb is the latch 8 of the

 Fixing mechanism shown in its initial position in which he does not fix the drive roller 4 at the storage area 7. Drive roller 4 and support drive roller 3 are not installed in the driver 1. They are in one

 Holding device, especially a holding frame 10, arranged. Installation or removal of the drive roller 4 and

Stützreibrolle 3 takes place by inserting or removing the holding frame 10 in the frame 2 of the driver. 1

Figure 3 shows a view of a driver according to the invention in side view similar to Figure la. Parts identical to FIG. 1a are given the same reference numbers. For clarity, drive roller 4 and support drive roller 3 are not shown. The rotation axis 6 is in one

 Rotary axis portion 11 of the rocker 5a arranged. Of the

Hydraulic cylinder 9a is disposed in an operating portion 12 of the rocker 5a. In contrast to FIG. 1 a, the axis of rotation area 11 is located between the storage area 7 and the actuation area 12.

Figure 4 shows a view of a driver according to the invention analogous to Figure lb from an elevated oblique view. Parts that are identical to FIG. 1 b are given the same reference numbers. In the driver 1, no drive roller is used and not shown accordingly. The support drive roller 3 is also not used. FIG. 4 shows the support drive roller in the removed state. The Stützreibrolle 3 is laterally in the direction of her Longitudinal axis of the driver 1 removed or inserted into the driver 1. FIG. 4 shows a removal frame on which the support drive roller 3 is executed from the driver 1 or inserted into the driver 1.

The fixing mechanism for fixing the drive roller 4 on the storage area 7 does not have to be a sliding latch 8

be executed. FIG. 5 shows an alternative

Fixing mechanism comprising a folding device with two folding arms 14, 16, which by a

movable wedge device 18 are locked. Each of the arms 14, 16 folds about another axis, arm 14 about axis 15, and arm 16 about axis 17. The two arms 14, 16 are connected via the axes 15, 17 with the rocker 5a. The movable wedge device 18 is attached to the arm 16; by a hydraulic cylinder 19, it is movable. Arm 14 has bulges in indentations on the

movable wedge device 18 fit. When closing the fixing mechanism, the arms 14, 16 fold into the

shown position, and the hydraulic cylinder 19 moves the movable wedge device 18 such that the

Indentations slide over the bulges. Thus, the two arms 14, 16 are locked together. Figure 6 shows a view of a driver according to the invention in side view analogous to Figure la and Figure 3. Parts identical to Figure la are provided with the same reference numerals. The rotation axis 6 is arranged in a rotation axis region 11 of the rocker 5a. The hydraulic cylinder 9a is in one

Operating range 12 of the rocker 5a arranged. As in FIG. 3, in contrast to FIG

Drehachsenbereich 11 between the storage area 7 and the actuating portion 12. Figure 3 and Figure 6 differ in the shape of the rocker 5a and the way in which the

Drive roller is mounted on the bearing area of the rocker. List of reference numbers

1 driver

 2 frames

 3 supporting drive roller

 4 drive roller

5a, 5b swingarm

 6 axis of rotation

 7 storage area

 8 bars

 9a, 9b hydraulic cylinder

 10 holding frames

 11 rotary axis range

 12 operating range

 13 extraction frame

 14 arm

 15 axis

 16 arm

 17 axis

 18 Movable wedge device

19 hydraulic cylinders

20a, 20b Balancing pots

Claims

claims 1. driver (1) for a steel strip coiler with at least one support frame (3) mounted on a frame (2), and at least one opposite the support drive roller (3) adjustable drive roller (4), which is mounted on at least one connected to the frame rocker (5a, 5b), wherein the drive roller (4) on a bearing region (7) of the rocker  (5a, 5b) is mounted, characterized in that the bearing area (7) is open for inserting or removing the drive roller (4) to the side and / or upwards when the rocker (5a, 5b) is in the operating position, and the driver (1) has a fixing mechanism for fixing the drive roller (4 ) at the storage area (7). 2. Driver (1) according to claim 1, characterized in that the positioning of the drive roller (4) to the support drive roller (3) in the fixed state by changing the setting of Fixation mechanism is changeable in different positions. 3. Driver (1) according to claim 1 or 2, characterized characterized in that the fixing mechanism a displaceable bolt (8), which is preferably fixable to the rocker (5a, 5b) comprises. 4. driver (1) according to one of claims 1 to 3, wherein the drive roller (4) between a pair of rockers (5a, 5b) is mounted, characterized in that the distance of the rockers (5a, 5b) is greater than the length the support drive roller (3) is. 5. Driver (1) according to one of claims 1 to 4, characterized in that at least one of the rockers (5a, 5b) relative to the other rocker (5b, 5a) is displaceable or pivotable. 6. driver (1) according to one of claims 1 to 5, characterized in that the steel strip coiler a Steel tape coiler for hot strip is. 7. driver (1) according to one of claims 1 to 6, characterized in that the driver (1) is a steering driver. 8. driver (1) according to one of claims 1 to 7, characterized in that the drive roller (4) and support drive roller (3) are arranged in a holding device. 9. driver (1) according to one of claims 1 to 8, characterized in that the driving roller axle and / or the Supporting friction roller axis around which the driving roller (4) or the support drive roller (3) rotates, at least two Treibrollenachsteilen and / or Stützreibrollenachsteilen exist, wherein at least one of the driving roller axle parts and / or Stützreibrollenachsteile as the cylindrical body of the drive roller or Support drive roller releasably mounted stub shaft is executed. 10. Driver (1) according to one of claims 1 to 9, characterized in that the support drive roller can be removed laterally in the direction of its longitudinal axis from the driver. 11. A method for removing a drive roller (4) from a driver (1) according to one of claims 1 to 10, characterized in that it comprises the steps  - opening the fixing mechanism,  - Remove the drive roller (4) to the side and / or after  at the top of the driver (1), includes. 12. The method according to claim 11, characterized in that it after removing the drive roller (4) in addition to the steps - Release fixation devices for fixing the Supporting drive roller (3) in the driver (1),  - Remove the support drive roller (3) upwards from the driver (1) , includes. 13. The method according to claim 11, characterized in that during the removal of the drive roller (4) in addition the steps - Release fixation devices for fixing the Supporting drive roller (3) in the driver (1),  - Remove the support drive roller (3) by lateral Pulling out of the driver (1), includes. 14. The method according to claim 11, characterized in that the drive roller (4) and support drive roller (3) in pairs Removing a holding device, in which a pair of drive roller (4) and support drive roller (3) is arranged to be removed from the driver (1).